Cool?

Marshall McLuhan writes "Every culture and every age has its favorite mode of perception and knowledge that it is to prescribe for everybody and everything" (21). I find this claim stimulating in that each generation and age has its own slang terms that mean completely different things from the last. McLuhan gives the example of the word "cool." It has changed meaning as it's changed hands. Now at the present moment it's seen as meaning a positive idea. McLuhan goes on to explain that "The restructuring of human work and association was shaped by the technique of fragmentation that is the essence of machine technology" (23). Would this then mean that because we are so heavily relying upon machinery we have also become fragmented? I think it does apply because we are presently seen as being very dependent upon technology for our everyday lives.